The Cavern Diver course is a 3-4 day program. There will be some theory classes, land drills, and in-water sessions to provide a solid foundation for your overhead environment training. The course requires that complete at least 4 dives with a minimum total bottom time of 80 minutes but we will probably be underwater for about triple that amount of time. After this course, you will be ready to participate in Intro to Cave in Mexico with our friends @ www.divedosojos.com